public Model.Galaxy GenerateGalaxyFromDensityMap(string densityMap, int width, int height, int numStars)
{
Model.Galaxy gal = new Model.Galaxy();
gal.Height = width;
gal.Width = width;
gal.StarsCount = numStars;
List<Model.GalaxySector> sectors = new List<Model.GalaxySector>();
//Generate sectors
int xCounter, yCounter;
xCounter = 0;
yCounter = 0;
for (int j = 0; j < 16; j++)
{
Model.GalaxySector sec = new Model.GalaxySector();
sec.X = (width / 4) * xCounter;
sec.Y = (width / 4) * yCounter;
sec.Width = (width / 4);
sec.Height = (width / 4);
sec.Stars = new List<Model.Star>();
sec.BoundingBox = new Microsoft.Xna.Framework.Rectangle(sec.X, sec.Y, sec.Width, sec.Height);
xCounter++;
if (xCounter >= 4)
{
xCounter = 0;
yCounter++;
}
sectors.Add(sec);
}
return gal;
}
public Model.Galaxy GenerateIrregularGalaxy(Model.GalaxySetup galaxySetup)
{
Model.Galaxy gal = new Model.Galaxy();
gal.Height = galaxySetup.Height;
gal.Width = galaxySetup.Width ;
gal.StarsCount = galaxySetup.Stars;
gal.Decorations = new List<Model.GalaxyDecoration>();
gal.Sectors = new List<Model.GalaxySector>();
//Generate sectors
int xCounter, yCounter;
xCounter = 0;
yCounter = 0;
for (int j = 0; j < 16; j++)
{
Model.GalaxySector sec = new Model.GalaxySector();
sec.X = (galaxySetup.Width / 4) * xCounter;
sec.Y = (galaxySetup.Height / 4) * yCounter;
sec.Width = (galaxySetup.Width / 4);
sec.Height = (galaxySetup.Height / 4);
sec.Stars = new List<Model.Star>();
sec.BoundingBox = new Microsoft.Xna.Framework.Rectangle(sec.X, sec.Y, sec.Width, sec.Height);
xCounter++;
if (xCounter >= 4)
{
xCounter = 0;
yCounter++;
}
gal.Sectors.Add(sec);
}
int i, attempts;
for (i = 0, attempts = 0; i < galaxySetup.Stars && attempts < Model.Constants.MaxAttemptsToPlaceStar; ++i, ++attempts)
{
double x = _rand.NextDouble() * galaxySetup.Width ;
double y = _rand.NextDouble() * galaxySetup.Height ;
Model.GalaxySector sec = gal.Sectors.Find(c => (c.X < x && (c.X + c.Width > x) && c.Y < y && (c.Y + c.Height > y)));
int halfDistance = Model.Constants.MinDistanceBetweenStars / 2;
if (x > sec.X + halfDistance && (x < (sec.X + sec.Width) - halfDistance) && (y > sec.Y + halfDistance) && (y < (sec.Y + sec.Height) - halfDistance))
{
double lowest_dist = GetDistanceToClosestStar(sec, (int)x, (int)y);
//if the stars is to close we try again.
if (lowest_dist < Model.Constants.MinDistanceBetweenStars && attempts < Model.Constants.MaxAttemptsToPlaceStar - 1)
{
--i;
continue;
}
}
else
{
--i;
continue;
}
//Create Star
attempts = 0;
Model.StarType starType = _gameContentManager.GetRandomStarType();
Model.Star starToAdd = new Model.Star();
starToAdd.Name = _gameContentManager.GetRandomStarName();
starToAdd.Position = new Vector2((int)x, (int)y);
starToAdd.StarTexture = starType.TextureName;
starToAdd.BoundingBox = new Microsoft.Xna.Framework.Rectangle((int)x, (int)y, Model.Constants.STAR_WIDTH, Model.Constants.STAR_WIDTH);
sec.Stars.Add(starToAdd);
}
//Add Decoration
for (int j = 0; j < 30; j++)
{
Model.GalaxyDecoration decor = new Model.GalaxyDecoration();
double x = _rand.NextDouble() * galaxySetup.Width ;
double y = _rand.NextDouble() * galaxySetup.Height ;
decor.Position = new Vector2((int)x, (int)y);
decor.Width = 256;
decor.Height = 256;
decor.Rotation = 0;
decor.TextureName = "gaseous01";
gal.Decorations.Add(decor);
}
return gal;
}
public Model.Galaxy GenerateSpiralGalaxy(Model.GalaxySetup galaxySetup)
{
Model.Galaxy gal = new Model.Galaxy();
gal.Height = galaxySetup.Height;
gal.Width = galaxySetup.Width;
gal.StarsCount = galaxySetup.Stars;
gal.Sectors = new List<Model.GalaxySector>();
//Generate sectors
int xCounter, yCounter;
xCounter = 0;
yCounter = 0;
for (int i = 0; i < 16; i++)
{
Model.GalaxySector sec = new Model.GalaxySector();
sec.X = (galaxySetup.Width / 4) * xCounter;
sec.Y = (galaxySetup.Height / 4) * yCounter;
sec.Width = (galaxySetup.Width / 4);
sec.Height = (galaxySetup.Height / 4);
sec.Stars = new List<Model.Star>();
sec.BoundingBox = new Microsoft.Xna.Framework.Rectangle(sec.X, sec.Y, sec.Width, sec.Height);
xCounter++;
if (xCounter >= 4)
{
xCounter = 0;
yCounter++;
}
gal.Sectors.Add(sec);
}
//Add stars
//Begin generation, should run as a background thread, and display a loading screen
double arm_offset = _rand.NextDouble(0.0, 2.0 * Math.PI);
double arm_angle = 2.0 * Math.PI / galaxySetup.Arms;
double arm_spread = 0.7 * Math.PI / galaxySetup.Arms ;
double arm_length = 1.5 * Math.PI;
double center = 0.25;
double x, y;
int j, attempts;
for (j = 0, attempts = 0; j < galaxySetup.Stars && attempts < Model.Constants.MaxAttemptsToPlaceStar; ++j, ++attempts)
{
double radius = _rand.NextDouble(0.0, 1.0);
if (radius < center)
{
double angle = _rand.NextDouble(0.0, 2.0 * Math.PI);
x = radius * Math.Cos(arm_offset + angle);
y = radius * Math.Sin(arm_offset + angle);
}
else
{
double arm = _rand.Next(0, galaxySetup.Arms ) * arm_angle;
double angle = _rand.NextDouble(0.0, arm_spread);
x = radius * Math.Cos(arm_offset + arm + angle + radius * arm_length);
y = radius * Math.Sin(arm_offset + arm + angle + radius * arm_length);
}
x = (x + 1) * galaxySetup.Width / 2.0;
y = (y + 1) * galaxySetup.Height / 2.0;
if (x < 0 || galaxySetup.Width <= x || y < 0 || galaxySetup.Height <= y)
continue;
Model.GalaxySector sec = gal.Sectors.Find(c => (c.X < x && (c.X + c.Width > x) && c.Y < y && (c.Y + c.Height > y)));
int halfDistance = Model.Constants.MinDistanceBetweenStars / 2;
if (x > sec.X + halfDistance && (x < (sec.X + sec.Width) - halfDistance) && (y > sec.Y + halfDistance) && (y < (sec.Y + sec.Height) - halfDistance))
{
double lowest_dist = GetDistanceToClosestStar(sec, (int)x, (int)y);
//if the stars is to close we try again.
if (lowest_dist < Model.Constants.MinDistanceBetweenStars && attempts < Model.Constants.MaxAttemptsToPlaceStar - 1)
{
--j;
continue;
}
}
else
{
--j;
continue;
}
//Create Star
Model.StarType starType = _gameContentManager.GetRandomStarType();
string starTexture = starType.TextureName;
sec.Stars.Add(new Model.Star { Position = new Vector2((int)x,(int)y), BoundingBox = new Microsoft.Xna.Framework.Rectangle((int)x, (int)y, Model.Constants.STAR_WIDTH , Model.Constants.STAR_WIDTH), StarTexture = starTexture });
attempts = 0;
}
return gal;
}
private void SetupGalaxy()
{
_gameGalaxy = _galaxyManager.GenerateIrregularGalaxy(new Model.GalaxySetup() { Height = 2048, Width = 2048, Sectors = 16, Stars = 200});
}